How to improve relationsships

Dear Brooke,
I am really trying to understand the concept of emotional adulthood, the manual, boundaries etc.
But practically I find it sometimes hard to work things out.
So I would like to name an example:
– if the husband does not help around the house. I think it is unfair and do not want to tolerate that.
So I ask him to do things, and he would not do them. How do I set boundaries?
Then I might risk the marriage. Because if he’d continue to not do the things, this might be the only boundary that one could set, or …

Please elaborate and give examples.
Thanks a lot!